<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="文件名" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入文件名"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="路径" prop="path">
        <el-input
          v-model="queryParams.path"
          placeholder="请输入路径"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="MD5值" prop="md5">
        <el-input
          v-model="queryParams.md5"
          placeholder="请输入MD5值"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="cyan" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['sys:files:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['sys:files:remove']"
        >删除</el-button>
      </el-col>
	  <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="filesList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="ID" align="center" prop="id" width="55"/>
      <el-table-column label="文件名" align="center" prop="title" />
      <el-table-column label="路径" align="center" prop="path" />
      <el-table-column label="MD5值" align="center" prop="md5" />
      <el-table-column label="操作" align="center" width="120" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['sys:files:remove']"
          >删除</el-button>
          <el-link icon="el-icon-download" target="_blank" :href="downloadUrl(scope.row)">下载</el-link>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改文件对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-upload ref="upload" :limit="1" accept=".jpg, .gif,.png,.xlsx, .xls,.docx, .doc,.ppt, .pptx,.pdf, .,mp4,.mp3, .zip" :headers="upload.headers"
        :action="upload.url + '?updateSupport=' + upload.updateSupport"
        :disabled="upload.isUploading" :on-progress="handleFileUploadProgress" :on-success="handleFileSuccess"
        :auto-upload="false" drag>
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">
          将文件拖到此处，或
          <em>点击上传</em>
        </div>
        <div class="el-upload__tip" style="color:red" slot="tip">提示：仅允许上传图片、文档、音视频和压缩格式文件！</div>
      </el-upload>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitFileForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listFiles, getFiles, delFiles, addFiles, updateFiles, exportFiles } from "@/api/sys/files";
import { getToken } from "@/utils/auth";

export default {
  name: "Files",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 文件表格数据
      filesList: [],
      // 弹出层标题
      title: "上传文件",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        title: null,
        path: null,
        md5: null,
        orderByColumn:"id",
        isAsc:"DESC"
      },
      // 导入参数
      upload: {
        // 是否显示弹出层
        open: false,
        // 弹出层标题
        title: "",
        // 是否禁用上传
        isUploading: false,
        // 是否更新已经存在的数据
        updateSupport: 0,
        // 设置上传的请求头部
        headers: { Authorization: "Bearer " + getToken() },
        // 上传的地址
        url: process.env.VUE_APP_BASE_API + "/sys/files/upload"
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        title: [
          { required: true, message: "文件名不能为空", trigger: "blur" }
        ],
        path: [
          { required: true, message: "路径不能为空", trigger: "blur" }
        ],
        md5: [
          { required: true, message: "MD5值不能为空", trigger: "blur" }
        ],
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询文件列表 */
    getList() {
      this.loading = true;
      listFiles(this.queryParams).then(response => {
        this.filesList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        title: null,
        path: null,
        md5: null,
        createBy: null,
        createTime: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加文件";
    },
    /** 下载 */
    downloadUrl (row) {
      return process.env.VUE_APP_BASE_API+"/sys/files/download/"+row.id;
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateFiles(this.form).then(response => {
              this.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addFiles(this.form).then(response => {
              this.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$confirm('是否确认删除文件编号为"' + ids + '"的数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(function() {
          return delFiles(ids);
        }).then(() => {
          this.getList();
          this.msgSuccess("删除成功");
        })
    },
      // 文件上传中处理
      handleFileUploadProgress(event, file, fileList) {
        this.upload.isUploading = true;
      },
      // 文件上传成功处理
      handleFileSuccess(response, file, fileList) {
        this.open = false;
        this.upload.isUploading = false;
        this.$refs.upload.clearFiles();
        this.$alert(response.msg, "上传结果", {
          dangerouslyUseHTMLString: true
        });
        this.getList();
      },
      // 提交上传文件
      submitFileForm() {
        this.$refs.upload.submit();
      }
  }
};
</script>
